Mean Rate of Change ( °C / Century )

Since: 1760 1810 1860 1910 1960 1990
Bahamas - 0.54
± 0.36
0.70
± 0.28
0.89
± 0.18
1.53
± 0.29
0.24
± 0.46
Caribbean - 0.61
± 0.28
0.76
± 0.22
0.96
± 0.13
1.54
± 0.25
0.73
± 0.56
North America - 0.82
± 0.23
1.02
± 0.18
1.11
± 0.11
2.90
± 0.19
4.72
± 0.28
Northern Hemisphere - 0.79
± 0.16
0.96
± 0.10
1.19
± 0.05
2.56
± 0.20
3.56
± 0.20
Global Land 0.43
± 0.18
0.79
± 0.13
0.91
± 0.08
1.11
± 0.03
2.16
± 0.11
2.78
± 0.13

Regional Climate Variability

Difference from Global Land Average ( °C, 95% range )

Smoothing Monthly Annual Five-year Ten-year Twenty-year
± 1.51 ± 0.65 ± 0.36 ± 0.29 ± 0.21

Correlation to Global Land Average (R value)

Smoothing Monthly Annual Five-year Ten-year Twenty-year
0.51 0.76 0.92 0.95 0.98

Variability in Monthly Means ( °C, 95% range )

Jan Feb Mar Apr May Jun
± 2.09 ± 1.98 ± 1.70 ± 1.31 ± 1.11 ± 0.99
Jul Aug Sep Oct Nov Dec
± 0.95 ± 0.85 ± 0.81 ± 1.05 ± 1.51 ± 1.98

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature